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Effects of nano-molybdenum coatings on the hydrogen storage properties of La–Mg–Ni based alloys

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  • Zhang, Huaiwei
  • Bao, Liang
  • Qi, Jianbo
  • Xuan, Weidong
  • Fu, Li
  • Yuan, Yongjun

Abstract

A relatively simple, but very effective method via magnetron sputtering process was used in the surface doping of the electrode plates. Molybdenum nano-particles coated electrodes were studied in the paper. The flower-like deposits appeared on the electrode plate surface, and Ni4Mo could be in-situ formed with the coating process. The hydrogen ab/desorption rates were accelerated at the beginning and dropped subsequently. The max discharge capacity and retention rate after twenty cycles of the St 5min sample reached about 370mAh/g and 92%, respectively. Comparing to the typical hydrogen storage alloys, they were much closed to the A2B7-type and have surpassed the most AB3-type Co-containing alloys. The activation energies and enthalpies of the various electrodes during the ab/dehydrogenation process were also discussed in details.

Suggested Citation

  • Zhang, Huaiwei & Bao, Liang & Qi, Jianbo & Xuan, Weidong & Fu, Li & Yuan, Yongjun, 2020. "Effects of nano-molybdenum coatings on the hydrogen storage properties of La–Mg–Ni based alloys," Renewable Energy, Elsevier, vol. 157(C), pages 1053-1060.
    • Handle: RePEc:eee:renene:v:157:y:2020:i:c:p:1053-1060
    DOI: 10.1016/j.renene.2020.05.078
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    References listed on IDEAS

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    1. Wei, T.Y. & Lim, K.L. & Tseng, Y.S. & Chan, S.L.I., 2017. "A review on the characterization of hydrogen in hydrogen storage materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 1122-1133.
    2. Niaz, Saba & Manzoor, Taniya & Pandith, Altaf Hussain, 2015. "Hydrogen storage: Materials, methods and perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 457-469.
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